{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2022:QKTA2IN4YHBEQP27NM3HAWVCCP","short_pith_number":"pith:QKTA2IN4","canonical_record":{"source":{"id":"2211.05818","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2022-11-10T19:21:41Z","cross_cats_sorted":["cond-mat.mes-hall"],"title_canon_sha256":"147db30c8cf2d9cbfa6efeea2740217fe94ef8e2d03974fb9df129c1b30f0a9a","abstract_canon_sha256":"3c3410fdc36914d8c2a87c6766e73ed2e00dd708f73c621793e7f0daaaef2450"},"schema_version":"1.0"},"canonical_sha256":"82a60d21bcc1c2483f5f6b36705aa213d46ebc1df5c49afea3ae9354f15df023","source":{"kind":"arxiv","id":"2211.05818","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2211.05818","created_at":"2026-07-05T05:15:14Z"},{"alias_kind":"arxiv_version","alias_value":"2211.05818v1","created_at":"2026-07-05T05:15:14Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2211.05818","created_at":"2026-07-05T05:15:14Z"},{"alias_kind":"pith_short_12","alias_value":"QKTA2IN4YHBE","created_at":"2026-07-05T05:15:14Z"},{"alias_kind":"pith_short_16","alias_value":"QKTA2IN4YHBEQP27","created_at":"2026-07-05T05:15:14Z"},{"alias_kind":"pith_short_8","alias_value":"QKTA2IN4","created_at":"2026-07-05T05:15:14Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2022:QKTA2IN4YHBEQP27NM3HAWVCCP","target":"record","payload":{"canonical_record":{"source":{"id":"2211.05818","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2022-11-10T19:21:41Z","cross_cats_sorted":["cond-mat.mes-hall"],"title_canon_sha256":"147db30c8cf2d9cbfa6efeea2740217fe94ef8e2d03974fb9df129c1b30f0a9a","abstract_canon_sha256":"3c3410fdc36914d8c2a87c6766e73ed2e00dd708f73c621793e7f0daaaef2450"},"schema_version":"1.0"},"canonical_sha256":"82a60d21bcc1c2483f5f6b36705aa213d46ebc1df5c49afea3ae9354f15df023","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T05:15:14.186555Z","signature_b64":"BPcN2B02bffBw3ccxyDB7b467XLOCota58orqHkoh9xCZ9EDzAbrxFW9kRdbW3d8H5Og89zffz+WUDGc3IHZBQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"82a60d21bcc1c2483f5f6b36705aa213d46ebc1df5c49afea3ae9354f15df023","last_reissued_at":"2026-07-05T05:15:14.186040Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T05:15:14.186040Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2211.05818","source_version":1,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-05T05:15:14Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"3qyruYhUKitqtjz4N0m7no1zBau+QKhHpk79I5fqvy2KHd7erkKVm43IviJjDZtanNjg1ONspBDeuVGA1zJgBQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-14T21:56:29.017056Z"},"content_sha256":"aa002d109f85ab453124f2dc18191fbc1f910cd3674028e6fd79fa7b2f55984b","schema_version":"1.0","event_id":"sha256:aa002d109f85ab453124f2dc18191fbc1f910cd3674028e6fd79fa7b2f55984b"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2022:QKTA2IN4YHBEQP27NM3HAWVCCP","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Competing oxygen evolution reaction mechanisms revealed by high-speed compressive Raman imaging","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":["cond-mat.mes-hall"],"primary_cat":"cond-mat.mtrl-sci","authors_text":"Alexis Grimaud, Alex W. Chin, Davide Romanin, Florian Dorchies, Hilton B. de Aguiar, Raj Pandya, Sylvain Gigan","submitted_at":"2022-11-10T19:21:41Z","abstract_excerpt":"Transition metal oxides are state-of-the-art materials for catalysing the oxygen evolution reaction (OER), whose slow kinetics currently limit the efficiency of water electrolysis. However, microscale physicochemical heterogeneity between particles, dynamic reactions both in the bulk and at the surface, and an interplay between particle reactivity and electrolyte makes probing the OER challenging. Here, we overcome these limitations by applying state-of-the-art compressive Raman imaging to uncover competing bias-dependent mechanisms for the OER in a solid electrocatalyst, {\\alpha}-Li2IrO3. By "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2211.05818","kind":"arxiv","version":1},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2211.05818/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"references":{"count":0,"sample":[],"resolved_work":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","internal_anchors":0},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"author_claims":{"count":0,"strong_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"builder_version":"pith-number-builder-2026-05-17-v1"},"verdict_id":null},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-05T05:15:14Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"VSyObFMTlwccQcfRBI53LljiQ/QGEHZI7JgaZypvx3SiYocMQCm1RxqNgxGZjgaT3ssughtSCH1dW6z1o96SDA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-14T21:56:29.017642Z"},"content_sha256":"3b8e4f43b800381ac61c54dd0c83b543e20c249a2149769ce1db9ee4ac0c8a9f","schema_version":"1.0","event_id":"sha256:3b8e4f43b800381ac61c54dd0c83b543e20c249a2149769ce1db9ee4ac0c8a9f"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/QKTA2IN4YHBEQP27NM3HAWVCCP/bundle.json","state_url":"https://pith.science/pith/QKTA2IN4YHBEQP27NM3HAWVCCP/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/QKTA2IN4YHBEQP27NM3HAWVCCP/bundle.json","status":"primary"}],"public_keys":[{"key_id":"pith-v1-2026-05","algorithm":"ed25519","format":"raw","public_key_b64":"stVStoiQhXFxp4s2pdzPNoqVNBMojDU/fJ2db5S3CbM=","public_key_hex":"b2d552b68890857171a78b36a5dccf368a953413288c353f7c9d9d6f94b709b3","fingerprint_sha256_b32_first128bits":"RVFV5Z2OI2J3ZUO7ERDEBCYNKS","fingerprint_sha256_hex":"8d4b5ee74e4693bcd1df2446408b0d54","rotates_at":null,"url":"https://pith.science/pith-signing-key.json","notes":"Pith uses this Ed25519 key to sign canonical record SHA-256 digests. Verify with: ed25519_verify(public_key, message=canonical_sha256_bytes, signature=base64decode(signature_b64))."}],"merge_version":"pith-open-graph-merge-v1","built_at":"2026-08-14T21:56:29Z","links":{"resolver":"https://pith.science/pith/QKTA2IN4YHBEQP27NM3HAWVCCP","bundle":"https://pith.science/pith/QKTA2IN4YHBEQP27NM3HAWVCCP/bundle.json","state":"https://pith.science/pith/QKTA2IN4YHBEQP27NM3HAWVCCP/state.json","well_known_bundle":"https://pith.science/.well-known/pith/QKTA2IN4YHBEQP27NM3HAWVCCP/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2022:QKTA2IN4YHBEQP27NM3HAWVCCP","merge_version":"pith-open-graph-merge-v1","event_count":2,"valid_event_count":2,"invalid_event_count":0,"equivocation_count":0,"current":{"canonical_record":{"metadata":{"abstract_canon_sha256":"3c3410fdc36914d8c2a87c6766e73ed2e00dd708f73c621793e7f0daaaef2450","cross_cats_sorted":["cond-mat.mes-hall"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2022-11-10T19:21:41Z","title_canon_sha256":"147db30c8cf2d9cbfa6efeea2740217fe94ef8e2d03974fb9df129c1b30f0a9a"},"schema_version":"1.0","source":{"id":"2211.05818","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2211.05818","created_at":"2026-07-05T05:15:14Z"},{"alias_kind":"arxiv_version","alias_value":"2211.05818v1","created_at":"2026-07-05T05:15:14Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2211.05818","created_at":"2026-07-05T05:15:14Z"},{"alias_kind":"pith_short_12","alias_value":"QKTA2IN4YHBE","created_at":"2026-07-05T05:15:14Z"},{"alias_kind":"pith_short_16","alias_value":"QKTA2IN4YHBEQP27","created_at":"2026-07-05T05:15:14Z"},{"alias_kind":"pith_short_8","alias_value":"QKTA2IN4","created_at":"2026-07-05T05:15:14Z"}],"graph_snapshots":[{"event_id":"sha256:3b8e4f43b800381ac61c54dd0c83b543e20c249a2149769ce1db9ee4ac0c8a9f","target":"graph","created_at":"2026-07-05T05:15:14Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"graph_snapshot":{"author_claims":{"count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","strong_count":0},"builder_version":"pith-number-builder-2026-05-17-v1","claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"integrity":{"available":true,"clean":true,"detectors_run":[],"endpoint":"/pith/2211.05818/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Transition metal oxides are state-of-the-art materials for catalysing the oxygen evolution reaction (OER), whose slow kinetics currently limit the efficiency of water electrolysis. However, microscale physicochemical heterogeneity between particles, dynamic reactions both in the bulk and at the surface, and an interplay between particle reactivity and electrolyte makes probing the OER challenging. Here, we overcome these limitations by applying state-of-the-art compressive Raman imaging to uncover competing bias-dependent mechanisms for the OER in a solid electrocatalyst, {\\alpha}-Li2IrO3. By ","authors_text":"Alexis Grimaud, Alex W. Chin, Davide Romanin, Florian Dorchies, Hilton B. de Aguiar, Raj Pandya, Sylvain Gigan","cross_cats":["cond-mat.mes-hall"],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2022-11-10T19:21:41Z","title":"Competing oxygen evolution reaction mechanisms revealed by high-speed compressive Raman imaging"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2211.05818","kind":"arxiv","version":1},"verdict":{"created_at":null,"id":null,"model_set":{},"one_line_summary":"","pipeline_version":null,"pith_extraction_headline":"","strongest_claim":"","weakest_assumption":""}},"verdict_id":null}}],"author_attestations":[],"timestamp_anchors":[],"storage_attestations":[],"citation_signatures":[],"replication_records":[],"corrections":[],"mirror_hints":[],"record_created":{"event_id":"sha256:aa002d109f85ab453124f2dc18191fbc1f910cd3674028e6fd79fa7b2f55984b","target":"record","created_at":"2026-07-05T05:15:14Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"attestation_state":"computed","canonical_record":{"metadata":{"abstract_canon_sha256":"3c3410fdc36914d8c2a87c6766e73ed2e00dd708f73c621793e7f0daaaef2450","cross_cats_sorted":["cond-mat.mes-hall"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2022-11-10T19:21:41Z","title_canon_sha256":"147db30c8cf2d9cbfa6efeea2740217fe94ef8e2d03974fb9df129c1b30f0a9a"},"schema_version":"1.0","source":{"id":"2211.05818","kind":"arxiv","version":1}},"canonical_sha256":"82a60d21bcc1c2483f5f6b36705aa213d46ebc1df5c49afea3ae9354f15df023","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"82a60d21bcc1c2483f5f6b36705aa213d46ebc1df5c49afea3ae9354f15df023","first_computed_at":"2026-07-05T05:15:14.186040Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T05:15:14.186040Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"BPcN2B02bffBw3ccxyDB7b467XLOCota58orqHkoh9xCZ9EDzAbrxFW9kRdbW3d8H5Og89zffz+WUDGc3IHZBQ==","signature_status":"signed_v1","signed_at":"2026-07-05T05:15:14.186555Z","signed_message":"canonical_sha256_bytes"},"source_id":"2211.05818","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:aa002d109f85ab453124f2dc18191fbc1f910cd3674028e6fd79fa7b2f55984b","sha256:3b8e4f43b800381ac61c54dd0c83b543e20c249a2149769ce1db9ee4ac0c8a9f"],"state_sha256":"6af871187da2151e5ac17f74ea2f4f2f46c2e2a2f2d38dbdf330107e4329f83f"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"TfKZ0BpM0uZNv/058WulzeOI5nakI1iRpwJkgbOcEENqFX7BEJfNLaBFaGp2iA+Vof9WpfQdIzE6tLpVJONmCg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-14T21:56:29.023608Z","bundle_sha256":"e599f29e55e80b7364b319ab1095c384e07c4af7c38d72320755c0194e5b00d1"}}